import axios from "axios";
import { MessageBox, Message } from "element-ui";
import store from "@/store";
import { getToken } from "@/utils/auth";
import qs from "qs";
// create an axios instance
//创建一个axios实例
const service = axios.create({
    baseURL: process.env.VUE_APP_BASE_API_PRO, // url = base url + request url
    withCredentials: true, // send cookies when cross-domain requests
    timeout: 5000 // request timeout
});

// request interceptor
//请求发送之前的拦截器
service.interceptors.request.use(
    config => {
        // do something before request is sent
        //如果token存在，把token添加到请求的头部
        if (store.getters.token) {
            // let each request carry token
            // ['X-Token'] is a custom headers key
            // please modify it according to the actual situation
            config.headers["token"] = getToken();
        }
        return config;
    },
    error => {
        // do something with request error
        console.log(error); // for debug
        return Promise.reject(error);
    }
);

// response interceptor
//请求返回之后的处理
service.interceptors.response.use(
    /**
     * If you want to get http information such as headers or status
     * Please return  response => response
     */

    /**
     * Determine the request status by custom code
     * Here is just an example
     * You can also judge the status by HTTP Status Code
     */
    response => {
        const res = response.data;

        // if the custom code is not 20000, it is judged as an error.
        if (res.code !== 200) {
            //600是token过期或token验证失败 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
            if (res.code === 600) {
                // to re-login
                MessageBox.confirm("您的登录信息已过期，请重新登录！", "系统提示", {
                    confirmButtonText: "去登录",
                    cancelButtonText: "取消",
                    type: "warning"
                }).then(() => {
                    store.dispatch("user/resetToken").then(() => {
                        location.reload();
                    });
                });
            } else {
                Message({
                    message: res.msg || "服务器出错",
                    type: "error",
                    duration: 5 * 1000
                });
                return Promise.reject(new Error(res.msg || "服务器出错"));
            }
        } else {
            return res;
        }
    },
    error => {
        console.log("err" + error); // for debug
        Message({
            message: error.msg || "服务器出错!",
            type: "error",
            duration: 5 * 1000
        });
        return Promise.reject(error);
    }
);

//请求方法
const http = {
    post(url, params) {
        return service.post(url, params, {
            transformRequest: [
                params => {
                    return JSON.stringify(params);
                }
            ],
            headers: {
                "Content-Type": "application/json"
            }
        });
    },
    put(url, params) {
        return service.put(url, params, {
            transformRequest: [
                params => {
                    return JSON.stringify(params);
                }
            ],
            headers: {
                "Content-Type": "application/json"
            }
        });
    },
    //parm =>  {id:10}
    // http://localhost:8089/api/user?id=10
    get(url, params) {
        return service.get(url, {
            params: params,
            paramsSerializer: params => {
                return qs.stringify(params);
            }
        });
    },
    //parm =>  {id:10}
    // http://localhost:8089/api/user/10
    getRestApi(url, params) {
        let _params;
        if (Object.is(params, undefined || null)) {
            _params = "";
        } else {
            _params = "/";
            for (const key in params) {
                console.log(key);
                console.log(params[key]);
                // eslint-disable-next-line no-prototype-builtins
                if (
                    params.hasOwnProperty(key) &&
                    params[key] !== null &&
                    params[key] !== ""
                ) {
                    _params += `${params[key]}/`;
                }
            }
            //去掉参数最后一位?
            _params = _params.substr(0, _params.length - 1);
        }
        console.log(_params);
        if (_params) {
            return service.get(`${url}${_params}`);
        } else {
            return service.get(url);
        }
    },
    //parm =>  {id:10}
    // http://localhost:8089/api/user/10
    delete(url, params) {
        let _params;
        if (Object.is(params, undefined || null)) {
            _params = "";
        } else {
            _params = "/";
            for (const key in params) {
                // eslint-disable-next-line no-prototype-builtins
                if (
                    params.hasOwnProperty(key) &&
                    params[key] !== null &&
                    params[key] !== ""
                ) {
                    _params += `${params[key]}/`;
                }
            }
            //去掉参数最后一位?
            _params = _params.substr(0, _params.length - 1);
        }
        if (_params) {
            return service.delete(`${url}${_params}`).catch(err => {
                // message.error(err.msg)
                return Promise.reject(err);
            });
        } else {
            return service.delete(url).catch(err => {
                // message.error(err.msg)
                return Promise.reject(err);
            });
        }
    },
    upload(url, params) {
        return service.post(url, params, {
            headers: {
                "Content-Type": "multipart/form-data"
            }
        });
    }
};
export default http;